Deafness from birth
The gene that makes the coat white can also affect the inner ear. A kitten then becomes deaf in one or both ears in its first weeks, and it stays that way. Nobody has counted it in the Khao Manee itself. In other white pedigree cats about 1 in 6 to 1 in 3 were deaf; with two blue eyes the chance is highest, about half in a British study. Deafness does not hurt. A cat deaf in one ear barely notices, and deaf cats live a good life indoors or in a secure cat garden.
How it is found: A hearing test (BAER) at the vet, from about 3 weeks old. A DNA test shows whether a cat has one or two copies of the white gene, but does not test hearing.



